William l



(No Model.)

' W. L. CARD 80 J. G. DANE.

DRY ORE SEPABATOR.

,043. Patented June 10,1884,

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UNrrn-n STATES PATENT OFFICE.

WILLIAM L. CARD AND JOSEPH G. DANE, OF LA GROSSE, WISCONSIN, AS-

SIGNORS TO THE CARD-DANE DRY GOLD SLUICE OO1\IPANY, (LIMITED,)

OF SAME PLACE.

DRY ORE SEPARATOR.

SPECIFICATION forming part of Letters Patent No. 300,043, dated June 10,1884.

Application filed July 19, 1883. (No model.)

To aZZ whom it may concern:

Be it known that we, WILLIAM L. CARD and J osnrn; G. DANE, both of La Crosse, in the county of La'Crosse and State of Wisconsin,'have invented a certain new and useful Improvement in Dry Ore Separators, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, and in which- Figure 1 is a vertical longitudinal section taken on line 1 1, Fig. 2. Fig. 2is atop View.

Fig. 3 is a Vertical section taken on line 3 '3,

Fig. 1, the roller being in side elevation. Fig. 4 is a section taken on line 4 '4, Fig. 8. Fig. 5 is a section taken on line 5 5, Fig. 8. Fig. 6 is a section taken on line 6 6, Fig. 4. Fig. 7

is a section on line 7 7, Fig. 1, and Fig. 8 is a detail top View of the belt or ore-bed.

Our invention relates to those ore-separators in which endless traveling ore-beds having riffles and an air-blast are employed.

This invention consists in features of novelty hereinafter fully described, and pointed out in the claims.

Referring to the drawings, A represents the supporting-legs, and B the outer wall or casing. Within the casing are three rollers or drums, O. 0 0*, supported, respectively, on shafts C 0* C journaled in suitable boxes secured to the sides of the casing. These rollers support an endless belt, D, and one or more of them-in this case that at 0-is a driving-roller. We have shown it driven by the following mechanism:

E represents the main driving-shaft, provided with a pulley, E, on one end, by which it receives power from any suitable motor,anda small pulley, E on the other end, which is connected by means of a belt, E, with a large -pulley, F, on a counter-shaft, F, journaled in the belt D; or the same result may be produced by suitable screw or ratchet gears. The outer edges of the belt D may be supported between the rollers G G by strips B, secured to the casing B a short distance apart, so that the belt can pass between them. (See Figs. 1, 2, 3, and 7.) The belt consists of a silk or other cloth, D, a wire-cloth, D", (the wirecloth serving as a support or backing to the silk,) transverse bars or rods D located a suit able distance apart, and held in place by narrow blocks D, preferably of leather, placed between their outer ends, (see Figs. 4, 5, and,

6,) leather orother suitable binding strips or pieces, D made to embrace the entire outer edges of the belts, and rivets D passing through the leather strips, the wire-cloths, and the blocks, and between the wires or rods, as shown. The outer ends of the drums or rollers G G 0 should be provided with circumferential grooves C (see Fig. 3) to receive the bearing part of the leather strips D The belt constructed as above described is strong and durable, and allows free passage of an air: current therethrough, as shown by the arrows, Fig. 1.

I represents a fan located in a chamber, 1.

J represents an air-chamber beneath the upper part of the belt,-and communicating with the fan-chamber, as shown in Fig. 1. The inclined position of the upper part of the belt and the location of the fan should be such that the air-blast from the fan would pass through the belt at or about right angles thereto.

K represents a chamber beneath the belt in the lower part of the casing, for the purpose of receiving the precious metal discharged from the belt. It is provided with a valve, K, and an extension, K, having a door, K, (see Fig. 1,) which should be provided with a lock.

- We prefer to provide the upper portion of the front of the casing with a wire-gauze part, 13 to form a peep-hole to see if the belt, &c., are working properly, and at the same time to prevent pilfering by the laborers employed about the machine. I

L represents wire-gauze in rear of the roller 0, for the purpose of checking the air-blast by obstructing, deflecting, and preventing it from taking the shortest course and being discharged too freely beneath the hopper.

The fan is driven by its pulley I having beltconnection with a pulley, 13*, on the shaft E.

The shaft G may be the main driving-shaft instead of that at E, and it would then be provided with a drivingpulley or cranks.

M represents the hopper or vibratory feeder, provided with a valve, M, and having its lower portion formed with tapering teeth M The spaces between the teeth are largest at their outer portion, and consequently the finest material falls through the teeth first onto the belt, and then the coarser material falls through or over the ends of the teeth on top of the finer. The hopper is pivoted to the casing by means of abolt, M (see Figs. 1 and 2,) and it is shaken or agitated horizontally (see Fig. 2) by means of a bell-crank lever, N, pivoted to the casing, to one arm of which it is connected, and by means of a pitman or rod, N, connecting the other arm of the bellcrank with the shaft E, the connection between the pitman and shaft being made by means of an eccentric or crank, preferably the former, as shown in Fig. 2.

The operation is as follows: The machine being started, the auriferous material is placed in the hopper, and from there discharged onto the belt, as above mentioned. The air-current passing through the belt, as described, carries the lighter material downward on the belt, notwithstanding the belt is moving in the other direction, as shown by the arrows on the rollers O 0 0 but before the mass reaches the roller C the air-current has so floated the foreign matter along down the belt that it is carried off, while the precious metal, being much heavier, lodge'sagainst the forward sides of the riftle-bars D, and is carried upward by the belt and discharged into the chamber K.

\Ve claimas our invention 1. In an ore-separator, the combination, with an endless traveling ore-bed, of a laterally-shaking hopper having blunt tapering teeth, between which the smaller particles first drop, and means to cause a current of air to pass upwardly through the ore-bed, as set forth.

2. In an ore-separator, the combination, with 7 an endless traveling ore-bed inclined from the receiving end downward toward the discharge end, and having riffles, of a laterally-shaking hopper having blunt tapering teeth to feed the finer material beneath the coarser, as set forth.

3. In an ore -separato1', the combination of a casing, three rollers arranged in triangular form, a fan-chamber between the rollers, a fan, an air-chamber between the fan-chamber and the rear roller,'and a chamber beneath the belt to receive the precious metal, as set forth.

4.. In an ore-separator, a belt consisting of textile and wire cloths, the textile cloth superimposed on the wire-cloth, riffles, blocks between the ends of the riffles, strips for binding the edges'of the belt, and rivets to secure the parts together, as set forth.

VIM. L. CARD.

JOSEPH G. DANE.

\Vitnesses:

ED. M.- XVING, JOHN A. DANIELS. 

